Advertisements
Advertisements
प्रश्न
Name two coloured metal ions.
Advertisements
उत्तर १
Fe2+, Mn2+
उत्तर २
Cupric (Blue) [Cu2+], Ferric (Yellow) [Fe3+]
APPEARS IN
संबंधित प्रश्न
Choose the most appropriate answer from the following list of oxides which fit the description
[SO2, SiO2, Al2O3, MgO, CO, Na2O]
An oxide which dissolves in water forming an acid
Name a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : FeCl3
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : Pb(NO3)2
Give two examples of amphoteric hydroxides.
Name a metallic hydroxide soluble in excess of NH4OH.
Name a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
Fill in the blank.
To distinguish soluble salts of zinc and lead ______ [NaOH / NH4OH]can be used.
When ammonium hydroxide is added to solution B, a pale blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide to give an inky blue solution. Name the cation present in solution B. What is the probable colour of solution B?
Why the alkali is added drop by drop to the salt solution?
